During the summer of 2010, the military charged five members of the platoon with murder of three Afghan civilians in Kandahar Province and collecting their body parts as trophies. In addition, seven soldiers were charged with crimes such as hashish use, impeding an investigation, and attacking the whistleblower, Specialist Justin Stoner.[5][6][7]

In March 2011, U.S. Army Specialist Jeremy Morlock pleaded guilty to three counts of premeditated murder. He told the court that he had helped to kill unarmed native Afghans in faked combat situations. Under a plea deal, Morlock received 24 years in prison and a dishonorable discharge for murdering three Afghan civilians, in return for testimony against other soldiers. By March 2011, eleven of the twelve soldiers charged were convicted of crimes. In February 2011, the U.S. military dropped all charges against the twelfth soldier, declaring that they chose to do it in the "interest of justice" without further explanation.[8][9][10][11]

On January 15, 2010, in the village of La Mohammad Kalay, fifteen-year-old Gul Mudin was doing farm work for his father. He was unarmed and killed "by means of throwing a fragmentary grenade at him and shooting him with a rifle," an action carried out by Spc. Jeremy Morlock and Pfc. Andrew Holmes under the direction of Staff Sgt. Calvin Gibbs. The boy was then stripped and the soldiers took photos with his body. Then the boy was left on the ground, stark naked.[12][13]

On February 22, using thermal imagery, the soldiers discovered Marach Agha curled in a ball by a roadside. Gibbs and Spc. Michael S. Wagnon allegedly shot him and placed a Kalashnikov next to the body to justify the killing. Morlock pleaded guilty for his death.[14] The Army later said it believed Marach Agha to be deaf or mentally retarded. The soldiers allegedly kept part of his skull.[15]

On May 2, 2010, Mullah Adahdad was attacked with a grenade and fatally shot, allegedly by Gibbs, Morlock, and Spc. Adam Winfield.[16][17] Three days after Adahdad was murdered, members of a Strykerplatoon returned to his village. Tribal elders had complained to Army officers that the cleric had been unarmed and that the shooting was a setup. "This guy was shot because he took an aggressive action against coalition forces," Lt. Stefan Moye, the platoon leader, explained to village residents in Qualaday. "We didn’t just [expletive] come over here and just shoot him randomly. And we don’t do that." This conversation was recorded by embedded photojournalist Max Becherer.[17][18]

Andrew Holmes poses with the body of Gul Mudin immediately after the boy was killed.

Der Spiegel published three photos of U.S. soldiers posing with the bodies of Afghans they had killed. One of the photos shows Spc. Jeremy Morlock next to one of them. He appears to be smiling and raising the head of a corpse by the hair.[19][20] Other images published later in Rolling Stone include one of two unidentified Afghans cuffed together around a milestone and wearing a cardboard handwritten sign made out of a MRE package box that read "Talibans are Dead". Other photos were taken of mutilated body parts, among them one of a head being maneuvered with a stick.[21] Two videos were also published, one of two possibly armed Afghans on a motorcycle gunned down by members of another battalion of the 5th Stryker brigade called "Motorcycle Kill",[22] and one called "Death Zone" of gunsight footage with jeerings heard in the background showing two Afghans suspected of planting an IED killed in an airstrike with Apocalyptica single "En Vie" as a soundtrack.[23] Senior officials at NATO's International Security Assistance Force in Kabul have compared the pictures published to the images of U.S. soldiers abusing prisoners in Abu Ghraib in Iraq.[24]

David Bram from Vacaville, California was charged with conspiracy to commit assault and battery, unlawfully striking another soldier, violating a lawful order, dereliction of duty, cruelty and maltreament and endeavoring to impede an investigation.[27] In May 2011 additional charges were filed against Bram including solicitation to commit premeditated murder, aggravated assault on Afghan civilians, planting evidence and unlawfully discussing murder scenarios with subordinates.[28] He was convicted by an enlisted panel sitting as a general court-martial of conspiracy to commit assault and battery, failure to obey a general order, dereliction of duty, maltreatment of a subordinate, assault consummated by battery, obstruction of justice, and solicitation of another to commit murder. Bram was sentenced to a dishonorable discharge, reduction to the lowest enlisted grade, and five years in prison eligible for parole after serving about 3 years and four months of his five-year sentence.[29] The U.S. Army Court of Criminal Appeals affirmed the conviction and sentence, and the Court of Appeals for the Armed Forces denied review.[30]

A report in The Guardian said that soldiers told the Army’s Criminal Investigation Command (CID) that Gibbs bragged of his exploits while serving in the Iraq War, saying how easily one could "toss a grenade at someone and kill them."[33][34] Prosecutors said Gibbs was found in possession of "finger bones, leg bones and a tooth taken from Afghan corpses".

Gibbs was convicted by a military jury on 15 counts, including the premeditated murder of Mudin, Agha and Adahdad as well as illegally cutting off pieces of their corpses and planting weapons to make the men appear to be Taliban fighters.[35][36][37] In November 2011, Gibbs was sentenced to life in prison with the possibility of parole after 10 years minus the 547 days of pretrial confinement.[38]

Andrew Holmes's attorneys argued they were constrained in defending him by the Army’s decision to conceal photos of the man he had allegedly shot in January.[39] The National Institute of Military Justice argued that the gruesome corpse photos should be made public.[40]

Holmes has also said Morlock threatened his life if he told anyone that the killing of Gul Mudin was staged and unnecessary.[13] A doctor testified at Holmes's trial that there were no machine gun wounds on the victim that prosecutors said was shot by Holmes's machine gun.[41] Another soldier testified that the body was riddled with wounds and that it appeared to him that it was Holmes's weapon that killed Mudin.[42]

In September 2011 Holmes pleaded guilty to murder without premeditation[43] and was sentenced to 7 years in prison.[44] He was released from prison on October 25th, 2015.[45]

Jones, of Pomona, California, faced charges that he beat up another soldier and fired at Afghan civilians who did not pose a threat to him.[46] He was sentenced to seven months in prison and demotion to the rank of private.[47]

Pfc. Moore, of Severna Park, Maryland, faced the fewest charges among the group. Moore pleaded guilty to using hashish during the deployment. He was demoted to private and had to forfeit half a month’s pay.[49]

Jeremy Morlock poses with the body of Gul Muddin immediately after the boy was killed.

Jeremy Morlock, a 22-year-old Army specialist from Wasilla, Alaska, was sentenced to 22 years in prison, reduction to the lowest enlisted grade and a dishonorable discharge by a military tribunal. Morlock pleaded guilty to three counts of premeditated murder, conspiracy, obstruction of justice and illegal drug use. He will become eligible for parole after serving 7 years in federal prison.[8][51] He has agreed to testify against the other soldiers allegedly involved. During his hearing he was asked by Judge Lieutenant Colonel Kwasi Hawks "Were you going to shoot at (civilians) to scare them and it got out of hand?". Morlock replied: "The plan was to kill people, sir".[52] Morlock challenged his guilty plea, but the Army Court of Criminal Appeals affirmed the conviction and sentence.[53]

Morlock's mother accused the US government of scapegoating him: "I think the government is just playing these guys as scapegoats. The leaders dropped the ball. Who was watching over all this?" she said in a Seattle Times interview.[54]

Quintal was given a bad-conduct discharge and sentenced to 90 days hard labor in a plea deal for frequently using drugs during his combat deployment, joining an assault on a comrade and keeping digital photos of Afghan casualties. He is also required to testify against others in the case.[55]

Robert Stevens, an Army medic from Portland, Oregon, knew Gibbs while serving with him in A-52, the Brigade Commander's Personnel Security Detachment, where they served under CPT Samuel Lynn. The two maintained a close friendship and remained in contact after Gibbs had been transferred from A-52 to 2–1 Infantry. SSG Stevens was sentenced to nine months in prison as part of a plea deal to testify against 11 other Lewis-McChord based Stryker soldiers.[56] He pleaded guilty to four charges including shooting "in the direction of" two Afghan farmers for no reason.[57][58] Stevens said Gibbs ordered him to shoot on the two farmers and that he regretted "not trying to stop Staff Sgt. Gibbs from trying to kill innocent people".[59]

Christopher Winfield, the father of platoon member Spc. Adam C. Winfield, attempted to alert the Army of the "kill team's" existence when his son explained the situation from Afghanistan via a Facebook chat after the first killing.[60] In response to the news from his son, Christopher Winfield called the Army inspector general's 24-hour hotline, the office of Senator Bill Nelson (D-Fla.), and a sergeant at Joint Base Lewis-McChord who told him to call the Army's Criminal Investigation Division. He then contacted the Fort Lewis command center and spoke to a sergeant on duty who agreed that Spc. Winfield was in potential danger but he had to report the crime to his superiors before the Army could take action.[16]

On August 5, 2011, Winfield, charged with premeditated murder and conspiracy to commit murder, pleaded guilty under a plea deal to involuntary manslaughter and use of an illegal controlled substance. The involuntary manslaughter charge stems from Winfield's failure to intervene and prevent the other soldiers from carrying out the attack against the Afghan in U.S. custody. Under the plea deal he didn't admit to the killing of Mullah Adahdad. He claimed that he fired his automatic weapon away from Adahdad but that he did nothing to stop the murder.[61][62][63][64] He was sentenced to 3 years in prison.[65] He was released from prison in August 2012.

Pfc. Justin Stoner was the soldier who caused the investigation to begin. He caught some other members of his unit smoking hashish. He was later beaten by some other members of his unit. His injuries were taken up his chain of command and had to explain what happened. He then mentioned the murders committed by SSG Gibbs and other unit members, which opened up the case. Stoner was not charged and was honorably discharged in 2012.

The US Army issued an apology for the photos, stating that "These court-martial proceedings speak for themselves. The photos appear in stark contrast to the discipline, professionalism and respect that have characterized our soldiers' performance during nearly 10 years of sustained operations."[69] In a Department of Defense Press release on March 28, 2011 the Army stated:

The Army will relentlessly pursue the truth, no matter where it leads, both in and out of court, no matter how unpleasant it may be, no matter how long it takes. As an Army, we are troubled that any soldier would lose his ‘moral compass’ as one soldier said during his trial. We will continue to do whatever we need to as an institution to understand how it happened, why it happened and what we need to do to prevent it from happening again.”[70]

According to a secret US Army investigative report obtained by Der Spiegel, Colonel Harry Tunnell's (of the 5th Stryker Brigade) "inattentiveness to administrative matters … may have helped create an environment in which misconduct could occur."[71] However the report according to Der Spiegel cleared him of responsibility stating there was no 'causal relationship' between the killings and his "aggressive leadership style".[72][73] At least a dozen media organizations have filed Freedom of Information Act requests for the report.[74]

The Army Times reported on the investigation into Harry Tunnell's leadership of the 5th Stryker Brigade and its conclusions. The brigade, was reported to be "rife with lapses of discipline, misdirection and mixed signals about its mission." Tunnell's leadership, which the report says included, a "lack of emphasis on administrative matters such as command inspections and urinalysis, 'may have helped create an environment in which misconduct could occur,' the investigation found".[75]